Research the causes of related medical symptoms such as: 1  Eye. 2  Eye symptoms (5412 causes) 3  Eye disease. 4  Eye disorder. 5  Eye problem (5412 causes) 6  Eye pain (475 causes) 7  Itch (1068 causes) 8  more symptoms...Â».
How to read the Histogram. A histogram is a graphical representation of the pixels exposed in your image. The left side of the graph represents the blacks or shadows, the right side represents the highlights or bright areas and the middle section is mid-tones (middle or 18% grey).
Once you have the Analysis Toolpak enabled, you can use it to create a histogram in Excel. Suppose you have a dataset as shown below. It has the marks (out of 100) of 40 students in a subject. To create a histogram using this data, we need to create the data intervals in which we want to find the data frequency.